If the target organ of a hormone is present but its receptors have changed what may happen?
Answer and explanation
Correct answer: The effect may be reduced even if the hormone is present
The governing concept is receptor-specific hormone action. A hormone produces a response only when it binds appropriately to receptors on or inside its target cells. If the target organ remains present but its receptors are altered, binding or signal transmission may become ineffective, so the response can decrease even though the hormone is circulating. Thus A is correct; B and C are biologically meaningless, while D confuses hormonal action with nerve conduction.
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What is the correct answer to this question?
The effect may be reduced even if the hormone is present
Why is this the correct answer?
The governing concept is receptor-specific hormone action. A hormone produces a response only when it binds appropriately to receptors on or inside its target cells. If the target organ remains present but its receptors are altered, binding or signal transmission may become ineffective, so the response can decrease even though the hormone is circulating. Thus A is correct; B and C are biologically meaningless, while D confuses hormonal action with nerve conduction.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Control and Coordination.
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